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Paper Abstract and Keywords
Presentation 2016-12-08 14:30
Optimization of reference beam width for high-capacity holographic data storage
Takeru Utsugi, Kazuyoshi Yamazaki, Kenichi Shimada (Hitachi), Yukinobu Tada (HLDS) MR2016-32
Abstract (in Japanese) (See Japanese page) 
(in English) A cold storage is low-cost and long archival lifetime storage for data of relatively few access frequency (cold data). Holographic data storage has a potential to achieve high-capacity cold storage systems more than 1TB/disc. Recently, we developed a new technology for high capacity of angular-multiplexing holographic data storage using the reference beam diameter optimization with a special wedge prism optical system. In this paper, we report the theory and the design method of the wedge prism optical system. Our developed technology improves both the medium use efficiency and light use efficiency in hologram recording. We confirmed that the developed technology reduces an unwanted exposure region on a disc by 1/10 of conventional mirror method and achieve 5% of the target unwanted exposure rate.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical Disc / Holographic Data Storage / Angular-Multiplexing / High-Capacity Recording / Wedge Prism / / /  
Reference Info. IEICE Tech. Rep., vol. 116, Dec. 2016.
Paper #  
Date of Issue 2016-12-01 (MR) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF MR2016-32

Conference Information
Committee MRIS ITE-MMS  
Conference Date 2016-12-08 - 2016-12-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Ehime Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Signal Processing, etc. 
Paper Information
Registration To MRIS 
Conference Code 2016-12-MR-MMS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Optimization of reference beam width for high-capacity holographic data storage 
Sub Title (in English)  
Keyword(1) Optical Disc  
Keyword(2) Holographic Data Storage  
Keyword(3) Angular-Multiplexing  
Keyword(4) High-Capacity Recording  
Keyword(5) Wedge Prism  
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Keyword(7)  
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1st Author's Name Takeru Utsugi  
1st Author's Affiliation Hitachi, Ltd. (Hitachi)
2nd Author's Name Kazuyoshi Yamazaki  
2nd Author's Affiliation Hitachi, Ltd. (Hitachi)
3rd Author's Name Kenichi Shimada  
3rd Author's Affiliation Hitachi, Ltd. (Hitachi)
4th Author's Name Yukinobu Tada  
4th Author's Affiliation Hitachi-LG Data Storage, Inc. (HLDS)
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Speaker Author-1 
Date Time 2016-12-08 14:30:00 
Presentation Time 25 minutes 
Registration for MRIS 
Paper # MR2016-32 
Volume (vol) vol.116 
Number (no) no.348 
Page pp.15-20 
#Pages 6 
Date of Issue 2016-12-01 (MR) 

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